Cutting nippers



y 1, 1951 J. A. SKOOG 2,550,874

CUTTING NIPPERS Filed Jur 9, 1946 JOHN AR V/D SKOO IN VEN TOR.

KJKW

AT Ty.

Patented May 1, 1951 Application July 9, 1946, Serial No. 682,193 InSweden February 22, 1945 2 Claims.

mounted and provided with an arm actuated upon by handles at the rearend of the tube by means of an intermediate rod within the tube.

One object of my invention is to provide a tool which needs extremelysmall space laterally.

Another object of my invention is to provide an arrangement of partswhereby an easy change of jaws will be possible.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangements ofparts to be hereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawing, showing the preferred form of construction and in which:

Fig. 1 is a side view of the nippers with the jaws opened; and

Fig. 2 is a similar side View of the upper portion thereof with shutjaws;

Fig. 3 shows a plan view of a detail; and

Fig. 4 a side view thereof.

The nippers are constructed to have a great length by means of anintermediate tube 4 between the handles I and the jaws 2, 3. The handlesare swingably mounted to the rear end of the tube, and at the forwardend thereof the one jaw 2 is secured for instance by means of an easilydetachable pin 5 or such like. The other jaw 3 is turnably mounted tothe jaw 2 coacting therewith, and is provided with a laterally directedarm 6 with a cross pin I.

The pin 1 is arranged to fit into an open bearing 8 at the one end of alink 9, the other end of which is at IU swingably mounted to a slideshoe II on the tube. This slide shoe is connected to the forward end ofa rod l3 by means of a screw 12 or such like entering an oblong aperturein the tube, said rod being slidably guided within the tube. At the rearend the rod is linked to the handles I in such a way that the rod willbe pushed rearwards when the handles are pressed towards each other, andforwards when the handles are separated. The bearing 8 is open towardsthe arm 6 so that the pin 1 can enter the v bearing when the link 9 isswung towards said arm. To maintain the pin in the bearing the link isprovided with a slide M with a fork end !5 which will cover the rearsurface of the pin when pushed forward into position, in such mannerpreventing the pin 1 from slipping out of the bearing. The slide I4 isretained in its forward position by a stopper in the shape of a springpin l6 inserted into a boring in the link 9 and abutting against therear end of the slide. When the slide [4 is to be drawn back the sprinpin I6 is fully pressed down into its boring enabling the slide to passover the upper end of the spring pin in a backward movement, and thelink 9 can be swung outwards releasing the pin 1.

In use the jaws will shut when the handles are pressed towards eachother forcing the rod l 3 to a rearward. movement within the tube 4, thejaws gripping the object, a pin or such like which has to be nipped orcut off. The movement is transmitted by means of the link 9 which turnsthe jaw 3 towards the jaw 2. The cutting force is very strong as themovement of the handles is reduced by the transmitting parts to a smallmovement of the jaw. The force is transmitted in such a way that theessential parts are exposed to pulling stresses only, thus the parts canbe given slender dimensions. As the only laterally extending part, thelink 9, is directed closely along the tube the need of space laterallyis inconsiderable. On account of the construction of the disconnectablepin 1 and the demountable jaws these can easily be changed for jaws ofother types and the tool can be used for different purposes.

It will be understood that modifications may be made within the spiritand scope of the appended claims.

Having thus described my invention what I claim is:

1. Cutting nippers for objects difiicult of access, comprising a tube,two jaw members, one jaw member fixed to the forward end of the tube andthe other jaw member pivotally mounted to the fixed jaw member, both jawmembers extending substantially forward in the direction of the tube, arod slidably positioned within the tube, rearwardly extendin handlespivotally mounted to the rear end of the tube, linking members eachconnected to one of said handles and to the rear end of the rod wherebythe rod is pushed backwards and forwards when the handles are closed andopened, respectively, said pivotal jaw member provided with a laterallyextending arm, a link connected to the arm and extending rearwardlyclosely along the outer side of the tube, the forward end of the rodconnected to said link by means extending through an aperture in thetube wall whereby actuation of the rod by the handles will causemovement of the pivotal jaw member toward and away from said fixed jawmember. 7,

2. Cutting nippers for objects difiicult of access, comprising a tube,two jaw members, one jaw member fixed to the forward end of the tube andthe other jaw member pivotally mounted to the fixed jaw member, both jawmembers extending substantially forward in, the direction of the tube, arod slidably positioned within the tube, rearwardly extending handlespivotally mounted to the rear end of the tube, linking members eachconnected to one of said handles and to the rear end of the rod wherebythe rod is pushed backwards and forwards when the handles are closed andopened, respectively, said pivotal jaw member provided with a laterallyextending arm having a free end provided with a cross pin, a link havingat one end a bearing groove to receive said cross pin, a movable slidemember on said link to, detachably' engagev the pin in the bearinggroove when the slide is moved in a forward position and means to locksaid slide in the 4 forward position, said link extending rearwardlyclosely along the outer side of the tube and the other end of the linkconnected to the forward end of the rod by means extending through anaperture in the tube wall whereby actuation of the rod by the handleswill cause movement of the pivotal jaw member toward and away from saidfixed jaw member.

JOHN ARVID SKOOG.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,423,723 Page July 8, 1947FOREIGN PATENTS Number Country Date 12,628 Great Britain Oct. 5; 1886426,649 France May 9, 1911

